CM2150 Electronic Control System – 019-047   Fault Lamp Circuit

Disconnect the original equipment manufacturer (OEM) harness connector from the electronic control module (ECM).

Turn the keyswitch to the ON position. Adjust the multimeter to measure VDC. Insert the multimeter lead into the amber warning lamp signal pin and attach it to the multimeter probe. Touch the other multimeter probe to the engine block. Read the display on the multimeter.

The multimeter
must show battery voltage. If battery voltage is
not present, there is a problem with an OEM harness wire, provided the amber warning lamp has previously been checked.

Refer to the OEM troubleshooting and repair manual for repair procedures.

Remove the lead from the amber warning lamp signal pin and insert it into the malfunction indicator lamp (MIL) signal pin. Touch the other multimeter probe to the engine block.

The multimeter
must show battery voltage. If battery voltage is
not present, there is a problem with the malfunction indicator lamp (MIL) OEM harness wire, provided the malfunction indicator lamp (MIL) has been previously checked.

Refer to the OEM troubleshooting and repair manual for repair procedures.

Remove the lead from the malfunction indicator lamp (MIL) signal pin and insert it into the red stop lamp signal pin. Touch the other multimeter probe to the engine block.

The multimeter
must show battery voltage. If battery voltage is
not present, there is a problem with the red stop lamp OEM harness wire, provided the red stop lamp has been previously checked. Refer to the OEM troubleshooting and repair manual for repair procedures.

Connect all components after completing the repair.